JUKI MEB-3200 Engineer's Manual page 153

Adjustment Procedures
1. Loosen setscrew 2 in the knife stopper.
2. Loosen setscrew 3 in the knife fixing plate and adjust the
position of cloth cutting knife (eyelet) 4 so that the portion
where cloth cutting knife (eyelet) 4 comes in contact with knife
stopper 1 is 55.9 mm from the center of the needle bar. Then
tighten setscrew 3 in the knife fixing plate.
3. Push knife stopper 1 to cloth cutting knife (eyelet) and tighten
setscrew 2 in the knife stopper to fix it.
1. Cut off the air of the regulator.
2. Loosen setscrew !1 in the knife fixing plate and remove cloth
cutting knife (eyelet) 7.
3. Remove two setscrews 5 in the cylinder installing plate and
put cloth cutting cylinder 6 in the raised state.
4. Loosen two setscrews 1 and one setscrew 2 in the knife base,
and make knife base 3 and knife base key 4 move in one
body.
5. Return cloth cutting cylinder 6 to its home position, temporarily
tighten two setscrews 5 in the cylinder installing plate, and
supply the air of regulator.
6. Move knife base 3 and knife base key 4 in one body to the
right and left as the arrow mark a to adjust the position of the
knife.
7. When the position is determined, fix two setscrews 1 in the
knife base.
8. Remove two setscrews 5 in the cylinder installing plate and
put cloth cutting cylinder 6 in the raised state. Then fix one
setscrew 2 in the knife base.
9. Return cloth cutting cylinder 6 to its home position and fix two
setscrews 5 in the cylinder installing plate.
(Caution) When changing from the standard cloth cutting knife
to the multicutting device, install cloth cutting knife
(decorative buttonhole) 9 on knife installing base !0 , and
making this as the standard, adjust cloth cutting knife
(straight) 8 to cloth cutting knife (decorative buttonhole)
9 to comparatively perform the adjustment with ease.
Results of Improper Adjustment
When the cloth cutting knife is
longitudinally out of place :
™ In case of the cut-after knife, the
seams at the top of eyelet or
seams at the narrow section of
eyelet are cut.
™ In case of the cut-before knife,
seams near the top of eyelet are
deformed.
When the cloth cutting knife is
laterally out of place :
™ In case of the cut-after knife,
seams of eyelet section and
parallel section are cut.
™ In case of the cut-before knife,
seams of parallel section and
eyelet section are deformed.
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